WELL WATER SAMPLING DEVICE FOR ENGINEERING SURVEYS Russian patent published in 2021 - IPC E21B49/08 

FIELD: water sampling.

SUBSTANCE: invention can be used for sampling water from aquifers in a geological well for analysis. The device contains a sampler in the form of a pipe and a water intake pipe with water intake holes. The water intake pipe is fixed by means of a thread on top of the sampler and abuts with an internal protrusion made in its wall against the end of the sampler. A filtration mesh is fixed between the protrusion and the end of the sampler, which closes the communicating opening between the sampler and the water intake pipe. The intake pipe is closed from above with a cover with air outlets. The cover is threaded inside the intake pipe and protrudes beyond the intake pipe from above. The lower edge of the intake pipe is bent outward. Outside, a cylindrical filter mesh is put on the water intake pipe. The mesh is fixed between the outwardly projecting parts of the cover and the water intake pipe. A shank with a hole for connecting the device to the drill rod of the drilling rig is rigidly mounted on the cover of the water intake device. In the lower cone-shaped part of the sampler, there is a branch pipe for draining the water sample. A cap is screwed on the end of the pipe.

EFFECT: high reliability of the results of analysis of water samples from aquifers in a well, including in wells without casing, simplifying the design.

1 cl, 4 dwg